Furnace



May 18', 1926.

. 1,585,297 H. LlPKEM-ANN FURNACE 7 Filed O 25 1925 3 Sheets-Sheet 1 INVENTOR Hen/'9 Lg'oenzarznx A TTOR NE KS May 18 1926.

H. LIPKEMANN FURNACE Filed Oct. 25 I 1923 3 Sheets-Sheet 2 IIIIIIIIIIIIIIIIIII.

ilifllllllfllll IN VENTOR a be xz BY A A TTQR NE Y5 Era-.23

tlhll'llil) HENRY LIPKEMANN, OF NEW YORK, N. Y., ASSIGNGR, BY MESNE ASSIGNMENTS, TO THE ABCO :BQIIJER CORPOBATIQN, OF BROOYLYN, ITE'W YORK, A COBEGRATION OF NEW YORK.

FURNACE.

Application filed October 25, 1923.

This invention relates to in'iprmenients in steam and water boilers known more genen ally as the round or house type.

The present invention contemplates the provision of means for supporting secondary combustion to the maximum degree over a wide area; to uniformly distribute air admitted for secondary combustion; to admit the air where the secondary coinoustion will play directly upon the boiler; to obtain the secondary combustion before the rising gases have been cooled; to incorporate the means for supplying the air into the furnace where it will not interfere with the general operation of the same, such as applying fresh fuel to the fire bed; to secure sunplicity of construction and operation; and to obtain other advantages and results as may be brought out in the following description.

Referring to the accompanying drawings in which like numerals of reference indicate similar parts throughout the several views;

Figure 1 is a front elevation of a furnace, with the asbestos covering in sections so as to more clearly show the structure of the furnace Figure 2 is a sectional view upon lines 2-2 of Fig. 1 looking in an upwardly direction as indicated by the arrows:

Figures 3 and t are cross sectional views on lines 3-3 and 4l l respectively of Fig. 2;

Figure 5 is a view similar to Figure 2, showing a modified structure; and

Figure 6 is a sectional view on line 6-6 of Figure 5.

in the specific embodiment of the invention illustrated in said drawings, the reference numeral 1 indicates the boiler or furnace in general which comprises a plurality of horizontal sections, the lower one of said sections as 2, constituting the ashpit, the next section constituting the lire pot, sections l and 5 constituting the boiler or crown sheet sections for receiving water, and section 6 constituting the head or top section of the furnace. it is to be understood that the specific arrangement of these sections may be varied considerably, and in fact the number of sect-ions may be altered, without departing from the scope of the present invention.

As is usual in the construction of such furnace, the boiler section 4E next above the Serial No. 670,743.

tire pot section 8 preferably constitutes crown sheet 7 fo' the lire pot. The structure is such that section 4 constituting the crown sheet 7 overlies the entire upper opening of the fire pot and is of spider construction ha "ing a plurality of radiating slots 8 through which. the gases from the tire bed may pass upwardly through the crown sheet to the next section and so on to the chimney.

In order to obtain secondary combu t'on, I provide a member9 to imn'iediately underlie crown sheet 7 and of the same spider form as the interior surface of said crown sheet. It will be observed in the present showing that the crown sheet is dome-like in shape, that is, the crown sheet goes up at its sides and then across like an inverted pan. The member 9 is slotted similarly to the crown sheet, that is, provides a plurality radialslots 10 which register with the radial. slots 8 with the crown sheet, so as to admit the rising from the fuel bed to pass through said slots 10 and 8. Preferably the member 9 is of suitable refractory material, such as tire-brick, so to resist the heat and also to be strong enough to not be easily broken by coal thrown into the furnace. The structure described wherein the crown sheet is of dome shape is furthermore advantageous in protecting the mem-' er 9 against direct impact from coal thrown into the furnace in that it elevates said member somewhat out of the way.

T he surface of the said member 9 is grooved, as at 11, next the crown sheet so as to provide in conjunction with said crown sheet a channel in which the air may pass. These grooves, indicated in Fig. 2, preferably provide a main channel and branch channels which open as indicated in l 1- along the radial slots 10 and 8. The air passing through the main channel will therefore be freeto pass out into the radial slots and combine with the uprising gases to form a secondary combustion which will operate directly upon the boiler or crown sheet surface to heat the water contained therein.

In order to admit air to the channels 11, 1 preferably provide a slot 12 between crown sheet section i and the tire pot section 3. At intervals, to register with said slots 12, I provide openings 13 connecting the slots 12 with channels 11. Air will accordingly enter free through slots 12 and 13 and channels Lil ceng thre paw nent e the ce and 1 i res shank qnzme'e j s to come in w "t erecti e the member 8 in the 'ith 011213111819 etion cemhin natien e ider 11102211 the med \1 :rzarnace the 0;, en con-e 11d spi J 11 DIS J Aeapherm and h: ya Enid 1215i: 11 if ,p' pres in a fume (Halt ing ser'o on their u ein ref" 5: U1: 1?

sectio 11 indicate th firep *flllVGl} rovides t 2, 21 me member 9 heretofore Six section e crown sheet is 1 steel or rive rev - s V S 1 2U zeet Green sheet,

"keeth 51 rev-(n cen may (m-ed, I

=sc cross each 1e" pl ntinp' W h the enfisid a plurality g entirely "h t1 11d Wh and tendin licatil Hy an a rally, 01s ex ,wger

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